The proliferation of industrial communications protocols on plant floors can create problems for those of you who build and support turnkey automated process equipment skids.
Do you have to stock a variety pressure transducers that speak HART and Profibus and Foundation fieldbus? What about field changes? It certainly would be helpful if you could swap out components such as the display or sensor modules at the user site.
Endress+Hauser thinks it can be of service. The company introduced the Cerabar and Deltabar families of pressure transmitters with features that provide HART, Profibus and Foundation fieldbus capability by means of interchangeable circuit card inserts. In addition, the modular design of these pressure transmitters provides the ability to replace the display, electronics module, and sensor modules in the field.
"Our Cerabar S pressure transmitter is suitable for gauge and absolute pressure measurement in gases, liquids or steam in all areas of process engineering," says Scott Richardson, Endress+Hauser's pressure product manager. "It handles level or volume measurement in liquids."
The Cerabar S offers a choice of capacitative sensor and ceramic membrane; monosilicon-based sensor and welded metallic membrane or diaphragm seal, and a high-temperature version without the diaphragm seal. The Cerabar S capacitive ceramic sensor technology is unique, says
The Deltabar S differential pressure transmitters were designed specifically for differential pressure, flow and level applications and include the same capacitive ceramic sensor technology. "The monosilicon-based sensor with metal membranes provides the fastest response time on the market of any digital transmitter," claims
In addition, flow functionality is built right into the transmitter, eliminating the necessity for a separate flow computer. The Deltabar differential pressure flow transmitter permits bidirectional flow, has a low-flow cutoff, and dual totalizers for counting daily/weekly/annual flow.
"The Cerabar S and Deltabar S are unique to the market," claims